Ramifications of the HLA-I Allelic Reactivity of Anti-HLA-E*01:01 and Anti-HLA-E*01:03 Heavy Chain Monoclonal Antibodies in Comparison with Anti-HLA-I IgG Reactivity in Non-Alloimmunized Males, Melanoma-Vaccine Recipients, and End-Stage Renal Disease Patients.
HLA-E
HLA-Ia
HLA-Ib
closed conformers
heavy chain
heterodimers
luminex
mean fluorescent intensity (MFI)
monoclonal IgG antibodies
monomeric
monospecific
multiplex bead assays
open conformers
polyreactive
α1 and α2 helices
β2microglobulin
Journal
Antibodies (Basel, Switzerland)
ISSN: 2073-4468
Titre abrégé: Antibodies (Basel)
Pays: Switzerland
ID NLM: 101587489
Informations de publication
Date de publication:
02 Mar 2022
02 Mar 2022
Historique:
received:
20
12
2021
revised:
07
02
2022
accepted:
22
02
2022
entrez:
24
3
2022
pubmed:
25
3
2022
medline:
25
3
2022
Statut:
epublish
Résumé
Serum anti-HLA-I IgG are present in non-alloimmunized males, cancer patients, and transplant recipients. Anti-HLA-I antibodies are also present in intravenous immunoglobulin (IVIg), prepared from the plasma of thousands of healthy donors. However, the HLA-Ia reactivity of IVIg diminishes markedly after passing through HLA-E HC-affinity columns, suggesting that the HLA-I reactivity is due to antibodies formed against HLA-E. Hence, we examined whether anti-HLA-E antibodies can react to HLA-I alleles. Monoclonal IgG antibodies (mAbs) against HCs of two HLA-E alleles were generated in Balb/C mice. The antibodies were analyzed using multiplex bead assays on a Luminex platform for HLA-I reactivity. Beads coated with an array of HLA heterodimers admixed with HCs (LABScreen) were used to examine the binding of IgG to different HLA-Ia (31-HLA-A, 50-HLA-B, and 16-HLA-C) and Ib (2-HLA-E, one each of HLA-F and HLA-G) alleles. A striking diversity in the HLA-Ia and/or HLA-Ib reactivity of mAbs was observed. The number of the mAbs reactive to (1) only HLA-E (
Identifiants
pubmed: 35323192
pii: antib11010018
doi: 10.3390/antib11010018
pmc: PMC8944535
pii:
doi:
Types de publication
Journal Article
Langues
eng
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